“…Indeed, attaching digital contents to physical tokens allows for rich, two-handed and parallel interaction. Since then, the work on TUIs has been abundant and many TUI applications have been developed in several domains: optics (Underkoffler & Ishii, 1998), urban planning (Underkoffler & Ishii, 1999;Arias, Eden, Fischer, Gorman, & Scharff, 2000), chemistry and system dynamics (Patten, Ishii, Hines & Pangaro, 2001), or topology (Piper, Ratti & Ishii, 2002;Patten & Ishii, 2007).…”